Loans (Impaired Loans) (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	$ 37,278,000	[1]		$ 37,278,000	[1]		$ 35,562,000	[1]
Total Unpaid Principal of Impaired Loans	43,126,000			43,126,000			38,658,000
Related Allowance on Impaired Loans	2,126,000			2,126,000			2,880,000
Average Recorded Investment of Impaired Loans	40,189,000		22,179,000	38,141,000		25,026,000
Interest Income Recognized on Impaired Loans	233,000		143,000	427,000		318,000
Commercial Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	33,052,000	[1]		33,052,000	[1]		31,251,000	[1]
Total Unpaid Principal of Impaired Loans	38,506,000			38,506,000			33,845,000
Related Allowance on Impaired Loans	1,470,000			1,470,000			2,414,000
Residential Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	3,862,000	[1]		3,862,000	[1]		3,870,000	[1]
Total Unpaid Principal of Impaired Loans	4,254,000			4,254,000			4,262,000
Related Allowance on Impaired Loans	638,000			638,000			463,000
Consumer Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	364,000	[1]		364,000	[1]		441,000	[1]
Total Unpaid Principal of Impaired Loans	366,000			366,000			551,000
Related Allowance on Impaired Loans	18,000			18,000			3,000
Class of Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	6,349,000	[1]		6,349,000	[1]		4,709,000	[1]
Recorded Investment of Impaired Loans with Related Allowance	30,929,000	[1]		30,929,000	[1]		30,853,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	10,386,000			10,386,000			4,732,000
Unpaid Principal of Impaired Loans with Related Allowance	32,740,000			32,740,000			33,926,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	2,126,000			2,126,000			2,880,000
Commercial Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	3,399,000	[1]		3,399,000	[1]		2,357,000	[1]
Recorded Investment of Impaired Loans with Related Allowance	25,647,000	[1]		25,647,000	[1]		17,897,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	7,421,000			7,421,000			2,360,000
Unpaid Principal of Impaired Loans with Related Allowance	26,716,000			26,716,000			19,738,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1,121,000			1,121,000			1,720,000
Average Recorded Investment of Impaired Loans	27,904,000		5,773,000	24,423,000		8,382,000
Interest Income Recognized on Impaired Loans	152,000		35,000	252,000		105,000
Commercial Construction and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	0	[1]		0	[1]		0	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	0			0			0
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	0			0			0
Average Recorded Investment of Impaired Loans	0		0	0		0
Interest Income Recognized on Impaired Loans	0		0	0		0
Commercial Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	2,621,000	[1]		2,621,000	[1]		1,058,000	[1]
Recorded Investment of Impaired Loans with Related Allowance	1,385,000	[1]		1,385,000	[1]		9,939,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	2,620,000			2,620,000			1,057,000
Unpaid Principal of Impaired Loans with Related Allowance	1,749,000			1,749,000			10,690,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	349,000			349,000			694,000
Average Recorded Investment of Impaired Loans	7,385,000		11,257,000	9,001,000		11,049,000
Interest Income Recognized on Impaired Loans	50,000		84,000	114,000		158,000
Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	329,000	[1]		329,000	[1]		1,294,000	[1]
Recorded Investment of Impaired Loans with Related Allowance	3,533,000	[1]		3,533,000	[1]		2,576,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	345,000			345,000			1,315,000
Unpaid Principal of Impaired Loans with Related Allowance	3,909,000			3,909,000			2,947,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	638,000			638,000			463,000
Average Recorded Investment of Impaired Loans	4,496,000		4,743,000	4,250,000		5,102,000
Interest Income Recognized on Impaired Loans	27,000		18,000	49,000		45,000
Homeowner Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	0	[1]		0	[1]		0	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	0			0			0
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	0			0			0
Average Recorded Investment of Impaired Loans	0		0	0		0
Interest Income Recognized on Impaired Loans	0		0	0		0
Home Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	173,000	[1]		173,000	[1]		187,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	174,000			174,000			255,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1,000			1,000			1,000
Average Recorded Investment of Impaired Loans	191,000		138,000	227,000		191,000
Interest Income Recognized on Impaired Loans	1,000		0	4,000		1,000
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	60,000	[1]		60,000	[1]		117,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	59,000			59,000			160,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	16,000			16,000			0
Average Recorded Investment of Impaired Loans	69,000		125,000	87,000		148,000
Interest Income Recognized on Impaired Loans	1,000		3,000	4,000		4,000
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	131,000	[1]		131,000	[1]		137,000	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	133,000			133,000			136,000
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1,000			1,000			2,000
Average Recorded Investment of Impaired Loans	144,000		143,000	153,000		154,000
Interest Income Recognized on Impaired Loans	$ 2,000		$ 3,000	$ 4,000		$ 5,000

[1] The recorded investment in impaired loans consists of unpaid principal balance, net of charge-offs, interest payments received applied to principal and unamortized deferred loan origination fees and costs. For impaired accruing loans (troubled debt restructurings for which management has concluded that the collectibility of the loan is not in doubt), the recorded investment also includes accrued interest.